923989867 has 2 divisors, whose sum is σ = 923989868. Its totient is φ = 923989866.

The previous prime is 923989819. The next prime is 923989877. The reversal of 923989867 is 768989329.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 923989867 - 2⁷ = 923989739 is a prime.

It is not a weakly prime, because it can be changed into another prime (923989877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461994933 + 461994934.

It is an arithmetic number, because the mean of its divisors is an integer number (461994934).

Almost surely, 2^923989867 is an apocalyptic number.

923989867 is a deficient number, since it is larger than the sum of its proper divisors (1).

923989867 is an equidigital number, since it uses as much as digits as its factorization.

923989867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 61.

The square root of 923989867 is about 30397.2016310712. The cubic root of 923989867 is about 973.9927768973.

The spelling of 923989867 in words is "nine hundred twenty-three million, nine hundred eighty-nine thousand, eight hundred sixty-seven".